Governor for fluid compressors or pumps



(No Model.) I

F. LANSBERG. GUVBRNOR POR FLUID GOMPRESSORS 0R PUMPS.

Patented Nov. 19, 1889.

N. PETERS. Phntolllhugnpher. Wnhngon. IILCV UNITED STATES PATENT OEEICE.

FRANK LANSBERG, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE LANSBIERG BRAKECOMPANY, OF EAST ST. LOUIS, ILLINOIS.

GOVERNOR FOR FLUID COMPRESSORS OR PUMPS.

SPECIFICATION forming part of Letters Patent No. 415,519, dated November19, 1889.

Application led April 29, 1889. Serial No. 308,937. (No model.)

' To all 'wh/0712, t ntf/.y concern:

Be it known that I, FRANK LANSBERG, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inGovernors for Fluid Compressors or Pumps, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawing, forming part of this specification, and which is avertical section.

My invention relates to the construction of a valve for air-brakeswherein the supply of steam to work the air-pump is automatically cutoit when the air has reached a certain pressure.

Referring to the drawing, l represents the inlet-pipe of the cut-oit (orthe pipe from the boiler) and 2 the outlet, (or the pipe to the pump.)

3 represents the valve through which the steam passes.

4 represents the air-inlet of the cut-off with which the train pipe, orthe pipe from the pump, operated by means ot' the steam passing throughthe ports l and 2, communicates.

\Vithin the housing 5 is a valve 6, with downwardly-extending wings 7,which is secured to an upwardly-projecting valve-stem 6, which latterprojects loosely through a valve 8, having a small port 9, andterminates at its upper end under a valve 3, opening downwardly andadapted to be closed by the opening of the valve 6. Secured to or madeintegral with the valves 3 and 8 is a neck or sleeve 16, and locatedwithin this sleeve, under the valve 3 and surrounding` the valve-stemand passing through the valve S and resting upon the valve 6, is aspring 19, adapted to hold the valve 3 to its scat and the v'alve 8 offof its seat against their own gravity. Located below the valve-wings 7,in a chamber l4,is a piston l0, having an upwardly-extending n eck lland guide-wings l2., f

13 represents a blow-oft or escape valve.

The operation is as follows: The steam passes through the port l, opensthe valve 3, passes out through t-he port 2, and is conveyed to andoperates the pump. Then the air has reached a certain pressure in thepipe which connects with the port 4, it raises the piston l0 by enteringthe chamber 14 beneath the piston. This causes the neck ll to abutagainst the Wings 7 and raise the valve (i from its seat, which actionallows free passage of the steam down through the port .9,whence itescapes past the valve 6 ria the passage 17, and leaves' theA housingthrough the exhaustcock 13, thus relieving a portion of the pressureabove the valve 8 and rendering the latter more easily lifted. As thevalve 6 moves upward, it comes in contact with the valve 8 and raisesthe latter from its seat,wh ile by the same pressure the valve 3 isclosed and the source of steam cut olif from t-he port 2, and the steamremaining in the latter allowed free escape past the valve S. As soon asthe pressure in the pipe 4c diminishes until it is less than thesteam-pressure on the inlet side ot' the valve 3, the valve 3 is openedagain and steam passes through to again operate the pump. Then, as soonas the air-pressure is raised again to exceed the steam-pressure, thevalve 3 is closed, as already stated.

The valve 8 is not absolutely essential to the operation of the device.Its ofce is simply to relieve the valve 6 of the greater portion of thesteam-pressure, and this it does by remaining on its seat while thevalve 3 is open, it only allowing the pressure that can be producedthrough the port 9, which is slight in comparison with that to which thewhole area ot' the valve 8 is subjected.

2O represents a valve by which the air-pressure may be cut oit,\vhilethe operation of the valves 3, 6,and 8 will not be interfered with, sothat the air can be entirely closed oft without interfering with theoperation of the pump.

2l represents a screw located in the top of the cut-off, and which maybe turned down against the wings 22 of the valve 3,if desired, to openthelatter,in case itshould stick. The screw 2l is preferably providedwith a jamnut 23,which maybe screwed down tight upon the housing 5', t0form a tight joint when the screw 2l is raised.

I claim as my inventionl. In a governor for air-compressors, thecombination of the valves 3 and 8, connected together, and piston l0,arranged to raise said valves, the valve 8 having a port 9. for theescape of steam, substantially as and for the purpose set forth.

IOO

2. In a governor for air-compressors, the combination of the valves 3,S, and 6, piston 10, and valve 13, the Valve S having` a port 9, andthevalve 6 having' passage-wayshetween it and the housing, substantiallyas and for the purpose set forth.

3. In a governor for air-compressors, the combination,with thehousinghaving apiston therein and the eXhaustport and ports 1 and 2, oftwo Valves 3 6, opening in opposite directions, located in said housingbetween the exhaust-port and port 1, and adapted to be operated by saidpiston, and a connection between said valves, substantially as setforth.

4. In a governor for air-compressors, the

combination, with the housing having,` the ports 1 and 2 andexhaust-port, and the piston 10, having neck 11, of two valves 3 6,opening in opposite directions, located in said housing between the port1 and exhaust-port, and a valve 8, located between the Valves 3 and 6,and having the port 9 and being` secured to the valve 3, substantiallyas set forth.

FRANK LANSBERG.

In presence of- EDW. S. KNIGHT, THOMAS KNIGHT.

